From: "Jason A. Donenfeld" <Jason@zx2c4.com>
To: Brassy Panache <brassy.panache@gmail.com>
Cc: wireguard@lists.zx2c4.com
Subject: Re: Error with wg-quick down when IPv6 not present
Date: Wed, 25 Sep 2019 11:25:41 +0200 [thread overview]
Message-ID: <20190925092541.GA8039@zx2c4.com> (raw)
In-Reply-To: <CAJLOqRznfra3wQz5Gd7-KQw98AN8CuLozC1ZSZk8mupoJ+77RQ@mail.gmail.com>
On Wed, Sep 25, 2019 at 11:06:18AM +1000, Brassy Panache wrote:
> I have a kernel without IPv6 support. I've noticed when running:
>
> $ wg-quick down vpn
>
>
> I receive the following errors:
>
> [#] ip -4 rule delete table 51820
> [#] ip -4 rule delete table main suppress_prefixlength 0
> RTNETLINK answers: Address family not supported by protocol
> Dump terminated
> RTNETLINK answers: Address family not supported by protocol
> Dump terminated
> [#] ip link delete dev vpn
> [#] resolvconf -d vpn -f
>
>
> This is caused by the assumption that the command:
>
> $ ip -6 rule show
>
>
> will run on the system. I have made a change to my local wg-quick script
> which first tests if the command runs successfully before it clears the
> rules. The same should probably also be done prior to running the IPv4
> version of the command.
Would this work?
diff --git a/src/tools/wg-quick/linux.bash b/src/tools/wg-quick/linux.bash
index e690944d..612ecd77 100755
--- a/src/tools/wg-quick/linux.bash
+++ b/src/tools/wg-quick/linux.bash
@@ -102,10 +102,10 @@ del_if() {
while [[ $(ip -4 rule show) == *"from all lookup main suppress_prefixlength 0"* ]]; do
cmd ip -4 rule delete table main suppress_prefixlength 0
done
- while [[ $(ip -6 rule show) == *"lookup $table"* ]]; do
+ while [[ $(ip -6 rule show 2>/dev/null) == *"lookup $table"* ]]; do
cmd ip -6 rule delete table $table
done
- while [[ $(ip -6 rule show) == *"from all lookup main suppress_prefixlength 0"* ]]; do
+ while [[ $(ip -6 rule show 2>/dev/null) == *"from all lookup main suppress_prefixlength 0"* ]]; do
cmd ip -6 rule delete table main suppress_prefixlength 0
done
fi
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next prev parent reply other threads:[~2019-09-25 9:26 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-25 1:06 Error with wg-quick down when IPv6 not present Brassy Panache
2019-09-25 9:25 ` Jason A. Donenfeld [this message]
2019-09-25 9:30 ` Brassy Panache
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